Exhibit 10.37

ENZON PHARMACEUTICALS, INC.2001 INCENTIVE STOCK PLANRESTRICTED STOCK UNIT AWARD

Terms and Conditions

The Company wishes to grant to Employee, effective as of the date set forth on the Notice of Grant of Award, an award of restricted stock units of the Companys common stock, par value $.01
per share (the Common Stock), on the terms and subject to the conditions set forth in the Notice of Grant of Award, these Terms and Conditions, and the Companys 2001 Incentive Stock Plan, as amended from time to time. As a
condition to the grant of such Award, Employee accepts these Terms and Conditions.

1.Definitions. As used in these Terms and Conditions, the following terms have the meanings set forth below:

Acquiring Person means any person (as such term is used in Sections 13(d) and 14(d) of the Securities Exchange Act of 1934, as amended (the Exchange Act)) who or
which, together with all Affiliates and Associates of such person, is the beneficial owner (as defined in Rule 13d-3 promulgated under the Exchange Act), directly or indirectly, of securities of the Company representing 35% or more of
the combined voting power of the Companys then outstanding securities, but shall not include the Company, or any subsidiary of the Company.

Affiliate and Associate shall have the respective meanings ascribed to such terms in Rule 12b-2 promulgated under the Exchange Act.

Award has the meaning ascribed to such term in Section 2 hereof.

Board means the Board of Directors of the Company.

A Change in Control means:

(a) the public announcement (which, for purposes of this definition, shall include, without limitation, a report filed pursuant to Section
13(d) of the Securities Exchange Act of 1934, as amended (the Exchange Act) that any person, entity or group, within the meaning of Section 13(d)(3) or 14(d)(2) of the Exchange Act, other than the Company or any of its
subsidiaries, has become the beneficial owner (within the meaning of Rule 13d-3 promulgated under the Exchange Act) of 35% or more of the combined voting power of the Companys then outstanding voting securities in a transaction or series of
transactions; or

(b) the Continuing Directors (as defined below) cease to constitute a majority of the Board; or

(c) the shareholders of the Company approve:

(i) any consolidation or merger of the Company in which the Company is not the continuing or surviving corporation; or


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(ii)any consolidation or merger of the Company following which either the Company or a corporation that, prior to the merger or consolidation,
was a subsidiary of the Company, shall be the surviving entity and a majority of the then outstanding voting securities of the Company (the Outstanding Company Voting Securities) is owned by a Person or Persons (as defined in Section
13(d)(3) or 14(d)(2) of the Securities Exchange Act of 1934, as amended) who were not beneficial owners of a majority of the Outstanding Company Voting Securities immediately prior to such merger or consolidation; other than, in the case of (i) or (ii) above, a merger of the Company in which shareholders of the Company immediately prior to the merger have the same proportionate ownership of stock of the
surviving corporation immediately after the merger; or


(d)any sale, lease, exchange or other transfer (in one transaction or a series of related transactions) of all or substantially all of the
assets of the Company; or

(e) any plan of liquidation or dissolution of the Company; or

(f) the majority of the Continuing Directors determine in their sole and absolute discretion that there has been a change in control of the Company.

Code means the Internal Revenue Code of 1986, as amended.

Common Stock has the meaning specified in the Recital to these Terms and Conditions.

Person means an individual, a partnership, a corporation, a limited liability company, an association, a joint stock company, a trust, a joint venture, an unincorporated organization and a
governmental entity or any department, agency or political subdivision thereof.

Continuing Director means any person who is a member of the Board who, while such a person is a member of the Board, is not an Acquiring Person or an Affiliate or Associate of an Acquiring
Person, or a representative of an Acquiring Person or of any such Affiliate or Associate, and who (i) was a member of the Board on the date ofthese Terms and Conditions or (B) subsequently
becomes a member of the Board with the approval of at least one-half (1/2) of the directors then in office (but excluding for this purpose any such individual whose initial assumption of office occurs as a result of either an actual or threatened
election contest or other actual or threatened solicitation of proxies or consents by or on behalf of a Person).

Plan means the Companys 2001 Incentive Stock Plan, as amended from time to time.

Restricted Stock Units means the right to receive Vested Shares upon their vesting in accordance with Section 3 below.

Shares means, collectively, the shares of Common Stock subject to the Award, whether or not such shares are Vested Shares.

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Vested Shares means the Shares with respect to which the Restricted Stock Units have vested at any particular time.

2. Award . The Company, effective as of the date set forth on the Notice of Grant of Award, hereby grants to
Employee Restricted Stock Units (the Award) representing the right to receive Vested Shares, subject to the terms and conditions set forth herein and in the Plan.

3. Vesting.

(a) Subject to the provisions of these Terms and Conditions, the Restricted Stock Units awarded to Employee shall vest and become the right to receive Vested Shares in accordance with the schedule indicated in the Notice of Grant of Award.

(b)Notwithstanding the vesting provisions contained in Section 3(a) above, but subject to the other terms and conditions set forth herein, if
Employee has been continuously employed by the Company until the date of a Change in Control of the Company, all of the Restricted Stock Units shall immediately vest on the date of such Change in Control.

(c)In the event of the disability (within the meaning of Section 409A of the Code) or death of Employee, if Employee has been continuously
employed by the Company until the date of such disability or death, Employee or his estate shall become immediately vested, as of the date of such disability or death, in all of the Restricted Stock Units subject to the Award.

(d)Except as provided in Section 3(c) and any effective employment agreements that Employee might have with the Company, if Employee ceases to
be an employee for any reason prior to the vesting of the Restricted Stock Units pursuant to Sections 3(a) or 3(b) hereof, Employees rights to all of the Restricted Stock Units (and the Shares subject to the Award) not vested on the date that
Employee ceases to be an employee shall be immediately and irrevocably forfeited and the Employee will retain no rights with respect to the forfeited units.

4.Additional Restriction on Transfer of Restricted Stock Units.

The Restricted Stock Units cannot be sold, assigned, transferred, gifted, pledged, hypothecated, or in any manner encumbered or disposed of at any time prior to delivery of the Shares underlying the
Restricted Stock Units after the Restricted Stock Units have vested pursuant to Section 3 above.

5. Issuance and Custody of Certificate; Representations of Employee.

(a) Subject to the restrictions in this Section 5, upon vesting of the Restricted Stock Units and following payment of any applicable withholding taxes pursuant to Section 8 of these Terms and Conditions, the Company shall promptly cause to be issued and delivered to Employee a certificate or certificates
evidencing such Vested Shares, free of any restrictive legends and registered in the name of Employee or in the name of Employees legal representatives, beneficiaries or heirs, as the case may be, and shall cause such certificate or certificates to be delivered to Employee or Employees legal representatives, beneficiaries or

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heirs; provided, that such certificate or certificates shall be issued no later than two and one-half (2 1⁄2) months following the end of the calendar year in which the vesting date occurs.

(b)The issuance of any Common Stock in accordance with this Award shall only be effective at such time that the sale or issuance of Common
Stock pursuant to these Terms and Conditions will not violate any state or federal securities or other laws.

(c)At any time after the vesting of the Restricted Stock Units and prior to the issuance of the Vested Shares, if the issuance of the Vested
Shares to the Employee is prohibited due to limitations under this Section 5, the Company shall use its reasonable best efforts to remove such limitations, unless such limitations relate solely to Employees personal situation. If such
limitations relate solely to Employees personal situation, the Company will use its reasonable best efforts to cooperate with the Employee in resolving such limitation.

6.Rights as Shareholder. Prior to the Restricted Stock Units vesting and Employee receiving his shares of
Common Stock underlying the Restricted Stock Units pursuant to Section 5 above, Employee shall not have ownership or rights of ownership of any Common Stock underlying the Restricted Stock Units awarded hereunder. Employee shall not be entitled to
receive dividend equivalents on the Restricted Stock Units awarded.

7.Distributions and Adjustments. In accordance with Section 4(C) of the Plan, the Award shall be subject to
adjustment in the event that any distribution, recapitalization, reorganization, merger or other event covered by Section 4(C) of the Plan shall occur.

8.Taxes. In order to provide the Company with the opportunity to claim the benefit of any income tax
deduction which may be available to it in connection with this restricted stock unit award, and in order to comply with all applicable federal or state tax laws or regulations, the Company may take such action as it deems appropriate to insure that,
if necessary, all applicable federal or state income and social security taxes are withheld or collected from Employee.

9.Employees Employment. Nothing in these Terms and Conditions shall confer upon Employee any right to
continue in the employ of the Company or any of its subsidiaries or interfere with the right of the Company or its subsidiaries, as the case may be, to terminate Employees employment or to increase or decrease Employees compensation at
any time.

10.Notices. All notices, claims, certificates, requests, demands, and other communications hereunder shall be
in writing and shall be deemed to have been duly given and delivered if personally delivered or if sent by nationally recognized overnight courier, by facsimile or by registered or certified mail, return receipt requested and postage prepaid,
addressed as follows:

(a)If to the Company, to it at:

Enzon Pharmaceuticals, Inc.
685 Route 202/206 
Bridgewater, New Jersey 08807Attn: Executive Vice President, Human Resources


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(b)If to Employee, to him/her at such Employees address as most recently supplied to the Company and set forth in the Companys
records; or

(c)to such other address as the party to whom notice is to be given may have furnished to the other party in writing in accordance herewith.

Any such notice or communication shall be deemed to have been received (i) in the case of personal delivery, on the date of such delivery (or if such date is not a business day, on the next business
day), (ii) in the case of nationally-recognized overnight courier, on the next business day after the date sent, (iii) in the case of facsimile transmission, when received (or if not sent on a business day, on the next business day after the date
sent), and (iv) in the case of mailing, on the third business day following the date on which the piece of mail containing such communication is posted.

11.Waiver of Breach. The waiver by either party of a breach of any provision of these Terms and Conditions
must be in writing and shall not operate or be construed as a waiver of any other or subsequent breach.

12.Undertaking. Both parties hereby agree to take whatever additional actions and execute whatever additional
documents either party may in their reasonable judgment deem necessary or advisable in order to carry out or effect one or more of the obligations or restrictions imposed on the other party under the provisions of these Terms and Conditions.

13.Plan Provisions Control.The Award is made subject to the terms and provisions of the Plan. In the event
that any provision of the Agreement conflicts with or is inconsistent in any respect with the terms of the Plan, the terms of the Plan shall control.

14.Governing Law. These Terms and Conditions shall be governed by, and construed in accordance with, the laws
of the State of Delaware (without giving effect to principles of conflicts of laws).

15.Section 409A. To the extent the Award is or becomes subject to Section 409A of the Code, the Notice of
Grant of Award and these Terms and Conditions shall be construed and interpreted in accordance with such Section 409A so as to avoid the assessment of additional tax and/or penalties thereunder.

16.Entire Agreement. These Terms and Conditions (and the other writings incorporated by reference herein,
including the Plan) constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior or contemporaneous written or oral negotiations, commitments, representations, and agreements with respect
thereto.

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ENZON PHARMACEUTICALS, INC.NOTICE OF GRANT OF AWARDRESTRICTED STOCK UNIT AWARD

Grant Date: xx/xx/xxCertificate No. xxxxxxxx

|Summary
    Grant Information       
|------------------------------------
|EMPLOYEE:                           
|NUMBER OF UNITS:                    
|GRANT DATEFAIR MARKET VALUEOF SHARES
|PLAN:                               

|Vesting Information
|-------------------
|Date               
|                   
|                   
|                   

In accordance with the terms and conditions of the Plan and as a condition to the Award set forth above, the Employee agrees to the provisions set forth in the Terms and Conditions attached hereto.

ENZON PHARMACEUTICALS, INC. By:_____________________________Paul DavitExecutive Vice President, Human Resources


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